difference between dawn and Dusk

Dear student,
Dawn refers to the gradual lifting of darkness which occurs just before the sun comes up in the morning - the sun coming up is ?dawn?.

Dusk refers to the gradual falling of darkness which occurs just after the sun goes down.

Both are periods of ?twilight? (meaning ?between the lights? of the moon and the sun).

But ?dawn? is slowly getting lighter, while ?dusk? is slowly getting darker over time.
Regards